Apparatus for supporting riveting-tools.



No. 673,407. Patented May ,7, i904,

J. a. NULL. I APPARATUS FOR SUPPORTING BIVEIING TOOLS.

(Application Med Mar. 27. X900.) (No Model.) a 3 Shsets$heet I,

WITNESSES:

m: NDRRIS warms co, puamuma. whsmucrmu 1:v c.

m. 673,407. A Patented May 7, 19m.

J. H. MULL. APPARATUS FOR SUPPORTING RIVETING TOOLS.

(Application filed. Man-27. 1900.)

in Mo'dei.) a Sheaia-8haet 2.

FIG. 2

WITNESSES: INVENTOR:

me nonms PEIERS ca. mammcc. wnumm'o D c.

Ne. 673,407. Patented May 7, 19m.

. J. H. MULL.

APPARATUS FOR SUPPORTING RIVETING TOOLS. (Application filed Mar. 27. 190m (Ila Model.) 3 Sheets-8heat 3.

HCZ i0.

.WITNESSES: 1

UNITED STATES PATENT EE cE;

JAMES HENRY MULL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE PNEUMATIC TOOL IMPROVEMENT COMPANY, OF SAME PLACE AND CAMDEN, NEW JERSEY.

APPARATUS FOR SUPPORTING RIVETING-TOOLS.

SPECIFICATION forming part of Letters Patent N 0. 673,407. dated May *7, 1901.

Application filed March 2'7, 1900. Sierial No 10,330- (No model.)

To aZZ whom it may concern,-

Be it known that 1, JAMES HENRY MULL, a citizen of the United States, residing in the city and county of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Riveting Apparatus, of which the following is a specification.

My invention relates to apparatus for sup porting tools or implements too large or unwieldy to be manually supported, and which are, in use, to be transported in succession to a number of dilferent points of operation or application upon a given structure.

My improvements are, however, especially intended for employment in connection with power operated riveting machines used to upset rivets in ships, bridges, tanks, and sundry other structures.

In the drawings 1 show, and herein I describe, a good form of convenient embodiment of my invention, the particular subjectmatter claimed as novel being hereinafter definitely specified.

Many changes in the form, arrangement,

and application, of the various parts hereinafter described may be made without departure from the spirit of my invention.

In the accompanying drawings,

Figure l is a view in edge elevation of an 0 apparatus embodying a good form of my invention.

Figure 2 is a view in elevation partly in section, of the apparatus shown in Figure 1, section being supposed on the dotted line AA 5 of said figure.

Figure 3 is a fragmentary View in face or front elevation ofthe apparatus shown in Figure 2.

Figure 4 is a sectional plan, and Figure 5 a View in front elevation, of a form of tool carrying yoke.

Figure 6 is a sectional'elevation of pressure controlling mechanism in the handle of an operating tool.

Figure 7 is an elevation, partly in section, on the line B-B of Figure 8,0f a form of mechanism for occasioning the swing of the carrier arm in a plane in parallelism with the plane of the adjacent face of the structure operated upon.

Figure 8 is a view in edge elevation of the apparatus partly shown in Figure 7.

Figure 9 is a view in top plan of a portion of the apparatus removed from the supporting mast and mounted upon a pair of supporting and traveling Wheels.

Figure 10 is a view in elevation of the supporting carriage shown in Figure 9, sight being taken on the right hand side of Figure 9, and section being supposed on the dotted line CC of said figure.

Figure 11 is a view in elevation of the expansion strut and its adjusting frame.

Similar characters of reference indicate corresponding parts.

In the accompanying drawings,

1 is a supporting rail or mast, shown as hollow and of circular section, and which may be temporarily supported in any desired manner in adjacency to the wall or structure to be operated upon by the operating tool, in a vertical, inclined, or horizontal, position, according to the character of such surface.

Any desired means may be employed to detachably secure the mast or rail to the structure upon which the riveting machine operates.

In Figure 2 I illustrate in dotted lines the application of screw controlled clamping rings 53 to said mast or rail, connected to which rings are screw studs 54 adapted to pass through holes formed in the structure and temporarily secured in piace by nuts 55 or other retaining devices.

2 is a traveler shown as encircling the supporting rail or mast, and adapted to have both longitudinal and rotative movement upon or with respect to the same.

3 is a stud, the base of which is shown as formed with a foot secured by the bolts 38 or otherwise to a face plate formed as part of the traveler.

4: is a carrier bracket having a cylindric countersink in its rear face to receive a cylindric outer end of the stud 3, and secured in position on said stud by an axial set screw 5, Figure 1, which passes through the base of the carrier bracket into the end of the stud.

By virtue of this last described arrangement the carrier bracket is free for rotative movement-with respect to said stud, to which it is' in effect swiveled.

Upon or within the carrier bracket is mounted what I term the carrier arm 6, the same being a device upon which the machine itself is shown as supported. Preferably as shown the carrier arm has movement of reciprocation through or with respect to the carrier bracket, and, to such end, said carrier bracket is, in the form illustrated in the drawings, provided with grooved rollers 7, conveniently four in number, two of which are located in one edge portion, and two in the other edge portion, of said bracket,

The two rollers at one edge are in aline-' ment with and located at corresponding distances from .the two at the other edge. The distance from one pair of grooved rollers to the other corresponds tothe breadth of the; carrier arm 6, which extends through the: space bet-ween the two pairs and is as to its re-t spective edges engaged in the grooves of said rollers.

The rollers 7are convenientlyjournaled between the base plate of the carrier bracket and forwardlyand inwardly extending projections or arms 8 of the same, as shown particularly in Figure 2.

The carrier arm 6 happens, in the form l shown, to be a plate like bar, the respective edges of which are beveled toa V-shape to correspond to the V-shaped grooves in rollers 7.

.As will be understood, in the construction just described, and which while preferred may be altered without departure from the spirit of my invention,the carrier bar will slide in the direction of its length, freely and easily through the carrier bracket without binding.

On the carrier bar or arm, and, at one end thereof, is mounted the riveting machine 9 for the support of which the apparatus is pri-, marily designed, and on the other end, in thei particular form of apparatus shown, and to? which, of course, I am not limited, is mounted Z an expansion strut for a purpose hereinafter? explained. f

The machine, which is of any preferred coni struction and arrangement, and the blows of a rapidly reciprocating hammer of which (not shown) are employed to beat down the rivetsi operated upon, is connected .to the carrier bar by a flexible joint of any preferred character, 5 adapted toafford freedom of movement to the machine to enable it to assume variousincli-l nations with respect to the rivet operated upon, and hereinafter termed a universal; joint. I prefer to employ that form of universal? joint known as a ball and socket joint.

In the drawings, the end portionof the carrier bar or arm, or a yoke member 10 attached l thereto, is shown as embodying a sphericall recess, and the tool as provided with a spherieal collar-or attachment 11 of such curvature as to snugly fit within and be free forrotative adjusting movement with respect to said recess.

The yoke member 10 embodying the spherical recess may, if employed, be rigidly affixed to the carrier bar, as shown in Figures 1, 7, and 8, but it preferably is, as shown in Figures 4 and 5, mounted in an opening 12 of greater diameter than itself, formed in a suitable enlargement at the end of the carrier bar, and provided with a securing guide plate 13 bearing such relation to the carrier bar or its enlargement that the yoke may be manually moved or floated, so to speak, to different positions with respect to the opening 12. v

Conveniently the guide plate 13 is formed as a circumferential flange or extension, so to speak, of the yoke, and said plate may extend into a circumferential recess 14 formed in the adjacent edge of theopening 12,-said recess being conveniently formed as shown in Figure 4by securing aplate 15 having a suitable countersink, to the body of the arm 6,

theopening 12 'beingformed through the body of said arm and said ,plate 15.

The expansion strut in the form in which I prefer to employ it, is a structure adapted to .be extended as to its length byfluid pressure, and consists of a pistoucylinder 16 within which is a piston head, not shown, connected with which is a projecting piston arm 17, of suitable length.

18 is a handle connected to the riveting machine. This handle conveniently contains parts which control the power or pressure transmitted to the machine and the expansion strut.

19 is a conveyerpipe assumed in connection with a source of compressed air supply.

The pressure pipe 19 discharges through the supply port 41 (Figure 6) into a valve chamber in which is mounted for reciprocation a double .headed valve 42 constantly .pressedoutward .by a spring 43 and adapted to be forced inward against the stress of said spring by a manually controlled valve lever 44 so mounted on the handle 18 as to be convenientlymanipulated by the operator.

45 is a valve port leading from the valve chamber to give the lead to the pressure by way ofthe duct 46 to the interior of the riveting machine for the operation of the usual rapidly reciprocating hammer or riveting device.

47 is the expansion strut supply port, leading from the end of the valve chamber, and connected by a conveyer'pipe 20 to the ex- .pansion strut.

.The outer head of the valve 42 is im perforate, while the inner head embodies a longi- ,tudinal passage or passages 48, shown in dotted lines in Figure 6.

49 is an exhaust port leading from the inner end of the valve chamber to the atmosphere.

When the parts are in the position shown in Figure 6, being their normal position, the valve is so located that its inner head closes the supply port 41 and the riveting machine IIO and expansion strut are consequently out of operation.

When it is desired to operate the apparatus the valve lever 44 is swung inward upon its pivot, occasioning the inward movement of the valve, and in such inward movement the inner head of the valve uncovers the supply port 41, so that the pressure enters from the pipe 19 to that portion of the valve chamber between the two heads of the valve, from which it passes by way of the port 45 and duct 46 to the machine 9, and by way of the passage 48, port 4'7, and conveyor 20 to the expansion strut, the pressure, in this arrangement having contemporaneous access to both the strut and the machine.

When it is desired to intermit the operation of the apparatus, pressure of the operators hand upon the lever 44, which he has exerted while holding the handle 18 and directing the tool, is released, and the spring 43 forces the valve 42 outward, restoring it and the lever 44 to the position shown in Figure 6.

In this position of the parts the supply port 41 is again closed against the pressure in the pipe 19, the pressure in the expansion strut and its conveyer 20 exhausts itself by backing through the port 47, the lower end of the valve chamber, and out through the exhaust port 49.

The pressure supplied to the riveting machine itself is usually allowed to exhaust from said machine as fast as it accomplishes its work.

Any remaining pressure in the machine and duct 46 may, however, pass or exhaust to the atmosphere through the passage 48 and exhaust port 49.

Conveniently the branch 20 which leads to the expansion strut extends along the carrier bar and is supported thereon by any suitable eyes or kindred devices.

The stud 3 in the form shown in Figures 1 and 2 of the drawings is provided in the region of its outer end with a circumferential series of latch recesses 23.

24, Figure 2, is a latch bolt mounted for longitudinal movement in a bracket 25 supported on the rear face of the carrier bracket 4 in such position as to be radial with respect to the stud 3 and therefore adapted to engage in the latch recesses of said stud.

A spiral spring encircling said bolt and disposed between the bracket 25 and a pin extending through said bolt, tends to constantly force the bolt against the stud, and, of course, into any recess 23 which happens to come into alinement with the bolt.

26 is a lever pivotally supported on suitable lugs 21 on the under face of the carrier bracket and engaged with the outer end of the bolt 24.

By manipulation of said lever 26 the bolt may conveniently be, when desired, withdrawn from anylatch recess in which it may be engaged.

In lieu of the latch recesses, latch bolt, and

associated appliances. just described, I may employ other devices operative to the same end.

Thus, in the construction shown in Figures '7 and 8, the stud 3 is shown as provided with a fixed circumferential rack 27; 28 are a pair of brackets or angle irons secured to the re spective ends of the carrier arm; 29 are a pair of brackets or angle irons erected upon the rear face of the carrier bracket; the angle irons 28 and 29 are each provided with an opening at its outer end, all said openings being in alinement; 30 is a worm shaft mounted in the openings last mentioned and free for rotation with respect thereto; 31 is a worm sleeve mounted on the shaft 30 in the region between the two angle irons 29 and abutting as to its respective ends against said angle irons.

Said worm sleeve is ke'yed to the shaft 30 so as to rotate therewith regardless of the longitudinal position of said shaft, and is provided with a worm in engagement with the circumferential rack 27.

The end of the worm shaft 30 adjacent to the machine 9 is equipped with an operating hand wheel Said worm shaft 30 is conveniently provided at one end with a universal joint 33 of any preferred character.

Any desired means may be employed to occasion the movement of the traveler 2, and the parts which it carries, along the supporting rail or mast.

When the supporting rail or mast is maintained in a vertical position, as assumed in the construction illustrated in Figure 2, I may resort to the arrangement indicated in dotted lines therein, for counterbalancing the weight of the traveler and its associated devices, so that said traveler may be easily manually moved up and down the mast.

In said Figure 2, 36 is a counterweight, which, as-a matter of convenience, may be located within the hollow interior of the rail or mast 1, secured to one end of a flexible connection 37, passing over asheave 35,-the axle 34 of which is assumed to be suitably supported,-the other end of which flexible connection is made fast to an eye 22 connected to the stud 3.

As will be understood from a consideration of the constructions described, the group of devices composing the traveler, the stud, carrier bracket, carrier bar, and connected parts, is capable not only of movement longitudinally of the supporting rail or mast, but said carrier bracket and bar and connected parts are capable of rotative movement upon the stud 3 as an axle; in addition to such movements the form and relation of the traveler and mast are such that the traveler, with the stud, carrier bracket, carrier bar and connected parts, are, as a whole, capable of rotative movement upon said rail or mast as an axle, in a plane perpendicular to the axis of said rail or mast, and this re- IIO gardless of the position, with respect to movement in a direction coincident with its own ries.

When the apparatus is tobe operated, and

has to such end been adjusted to bring the machine 9 into the vicinity of a rivet, the

valve-lever 44 is depressed and the lead given to the compressed air or other motive fluid through the pipe 20 to'the cylinder of the expansion strut; the pressure occasions the forcible protrusion of the piston rod 17, which,

encountering the local surface adjacent to which the apparatus is arranged, and which said strut and said machine face, will, in the 1 continued expulsion of said rod, tilt the entire 3 structure upon the rail or mast as an axle and thereby carry the acting tool of the riveting l machine 9 against the rivet to be operated upon, and which has already been placed in 1 said local surface.

As the rivet is gradually beaten down, the

constant expansion of the strut continues to tilt the structure upon the mast or othersupport, so that the riveting machinecontinues 1 in contact with the lowering or diminishing 5 end. of the rivet.

In the particular form of apparatus herein 1 represented and described, the lead is given 5 to the pressure to the riveting machine at the 1 same time it is admitted to the strut, consequently as soon as the riveting machine reaches the rivet, its actingtool which will i have begun its movement of reciprocation,

will begin to act upon said rivet.

The expansion strut forcibly maintains the l riveting machine in position during its operation upon a rivet, serving also to support the I carrier bar against the recoiling motion or rearward thrust of the machine due to the impact of its parts against the rivet.

Of course, any suitable pressure control- Z ling cocks or valves may be employed, and any desired sequence of admission of the pressure to, and of shutting it off from, the strut and machine, may be resorted to.

Heretofore it has been usual to employ in certain classes of work, riveting machines of a character in which the hammer and rivet tool are mounted in a hammer carrier, in turn mounted in and having telescopic movement with relation to the body of the riveting machine.

Among other reasons, this construction has been resorted to with a view to increase the range of the riveting machine and enable the striking tool to be present-ed in close proximity to a rivet to be operated upon While the body of the riveting machine remains in a relatively fixed position, inasmuch as apparatus as heretofore constructed has not permitted the carrying of the body of the riveting machine to a position in close adjacency to the rivet to be operated upon.

. c st-73, 107

In the form of my improved construction herein set forth, as Will be understood, the extensionof the expansion strut and the consequent movement of the carrying bar, stud,

and traveler, upon the mast or other support as an axle, carries the body of the riveting machine into close proximity to the rivet to be operated upon, and, therefore, in connection with my improved apparatus may be employed riveting machines not equipped with the telescopically mounted hammer carrier, but of the simpler and less expensive type in which the hammer and striking tool are mounted for reciprocation directly within the body of the casing.

The expansion strut may, in the form of apparatus illustrated, owing to the position of the controlling valve lever 44, be very conveniently manipulated by the operator without leaving his position in proximity to the riveting machine.

As will be understood, the carrier bar may, in the preferred construction shown, be quickly and easily manually shifted longitudinally through the carrier bracket to convey the riveting machine attached to and supported by it, to anyd-esired point of operation in the line of such movement.

The riveting machine itself is, byreason of j its ball and socket or universal joint connection with the carrier bar, capable of adjustm ent to any desired inclination so that a rivet can be operated upon from any desired point, the angle of the machine being changed as desired as the upsetting'of the rivet end progresses.

By reason of the provision in the carrier arm of the opening 12 in which the yoke 10 is mounted, said yoke and the tool may, when this construction is employed, be floated, so to speak, in the plane of said arm, in one direction and another for a distance limited only by the dimensions of said opening.

This construction imparts to the riveting machine a range of movement additional to that due to the ball and socket or other universal joint, and manifestly obviates at times the necessity for longitudinally shifting the entire carrier bar when it is desired to simply move the riveting machine a short distance.

Obviously the form of yoke illustrated may be dispensed with, and other forms of connection between the riveting machine and the carrier bar be resorted to.

By virtue of the movement of the carrier bracket and carrier bar together upon the stud 3 as a pivot, the machine 9 may, after operating under the manipulation of the parts, upon the rivets within its range of movement upon the right hand side of the rail or mast (Figure 1), be rotated to a position the reverse of that shown in Figure 1, and the machine may thereupon operate upon all the rivets within its range on the local surface at the left hand side of the rail or mast.

Of course, after the riveting machine has operated upon all the rivets within the range of movement of the parts on both sides of the rail or mast, said rail or mast and all of the connected parts may be removed bodily to and set up in a new field of operation.

It is when the carrier arm and connected parts are of considerable weight, or when it is desired to control the movement of rotation of the carrier bracket and carrier upon the stud 3 as a pivot, without necessitating the movement by the operator from his position by the riveting machine to the bracket carrier, that the arrangement illustrated in Figures 7 and 8 maybe employed in lieu of the latch bolt and its connected parts as shown in Figure 2.

Manifestly by the rotation of the hand wheel 32 (Figures 7 and 8) the worm sleeve 31 will byits engagement in the circumferential rack 27 occasion the tilting or rotative movement upon the stud 3 as a pivot, in one direction or the other, of the carrier bracket and bar, said bar and bracket being of course held, without other locking device, by the engagement of the worm with the rack 27, in any tilted or inclined position to which they may be brought.

In the shifting or longitudinal movement of the carrier bar through the carrier bracket, the worm shaft 30, of course, participates, sliding freely through the worm sleeve with respect to which it is as stated keyed, and which sleeve is, of course, maintained against longitudinal movement by the bracket or angle irons 29.

The stud 3 with the carrier bracket and carrier bar and connected parts may, by the removal of the bolts 38 (Figure 1), be bodily removed from the follower and mast and employed in connection with other forms of supporting apparatus.

In Figures 9 and i0 I show the said parts as thus removed from the traveler and mounted upon and secured to an axle 39 connective of'a pair of carrying wheels 40. The axle illustrated happens to be a drop axle.

The apparatus as thus mounted upon the wheels, may be employed in heading rivets when the same are entered in various horizontal surfaces.

In the employment of the apparatus in the form shown in Figures 9 and 10, the structure may be brought to a center or balance upon said wheels, and transported upon said l wheels as carriers from one operation or rivet to another, and, when in use, the expansion strut, bearing and expanding under applied pressure, as hereinbefore explained, against the floor or surface upon which the wheels rest, occasions the depression of the end of the carrier bar carrying the riveting machine, and consequently of the riveting machine itself, against or into close proximity to the rivets in succession.

In passing from rivet to rivet on lines transverse to the axes of the wheels, the structure may be rolled along upon said wheels, without altering the longitudinal relation of the carrier bar thereto,or the carrier bar may be shifted, within the limitof its length, through the carrier bracket while the wheels remain stationary, or both such movements may be alternately employed.

The parts tilted with the carrier arm as a result of the extension of the expansion strut, include, of course, in the form and arrangement of apparatus shown, the drop axle, the entire structure turning upon the gudgeons of the drop axle 39 in their hearings in the respective wheels 40.

The carrier bracket, of course, whentransferred from the mast l to the wheels 40, continues to possess its capacity for rotative movement with respect to the stud 3, so that the riveting machine may, in the use of the machine shown in Figures9and'10, be shifted to the right or left to a slight degree, limited by the distance apart of the vertical side members of the axle 39.

The stud, carrier bracket, and carrier bar, then, with their associated parts, may, as will now be fully understood, be alternately mounted and employed upon the supporting rail or mast, and upon the wheels, said parts constituting a structure capable moreover of being mounted upon and employed in connection with supports of various kinds other than the two,to-wit the mast or rail 1 and the wheels 40,-herein represented and described. In employing the carrier bracket and bar in connection with other forms of support, the stud 3may under some circumstances be dispensed with.

The apparatus herein illustrated and described is one which is useful when struts other than the power actuated expansion strut are employed,and, moreover, said power actuated expansion strut is useful in connection with supporting apparatus of a character different from that herein illustrated and described.

Myinvention provides a riveting machine, carrier bar, bracket, and supporting stud, which maybe successively employed in operations upon rivets in various structures, rendering it unnecessary for the constructor to possess as heretofore an independent riveting machine and carrying apparatus complete for each of the various kinds of surface in which the rivets to be operated upon are entered.

While the riveting tool and strut herein referred to are preferably operated by pneumatic pressure my invention contemplates the employment of other kinds of power, and does not exclude the employment of electricity as a motive power.

While, moreover, I include in certain of the claims, in connection with other elements, a riveting machine, it is, of course, to be understood that said claims cover also the use in lieu thereof of kindred heavy or IIO power operated vibratory machines employed in succession at anumber of adjacent points within a given area.

As in some arrangements of the parts it is desirable that the expansion strut shall occupy a position at the distant end of the carrier bar,and in others, as for instance when the carrier bar is shifted well over to the left, (Figure 1) that it should be closer to the carrier bracket,-to adjust the leverage it exerts through the carrier bar upon the riveting machine,I may, as shown in Figures 1, 9 and 11, arrange the strut free for longitudinal adjustment upon the bar 6, as well as provide means whereby its range of adjustment from the bar may be varied.

50 is a strut carrying slide, embracing the carrier bar and free for movement longitudinally of the same.

51 is a strut carrying frame, having a head to which the strut is directly secured, and two legs which respectively fit free for longitudinal movement in undercut ways or grooves formed in the respective sides of the slide 50. Lock openings in the respective legs are adapted to come by pairs into registry with a lock opening extending transversely through the body of the slide or extension thereof, (see Figure 11).

52 is a lock bar which, after the strut has been moved toward or "from the carrier bar,- the legs of the frame moving longitudinally through the ways or grooves,until it is in the desired position and a pair of lock openings in the legs are in registry with the lock openings in the slide,maybe inserted through such lock openings to secure the parts in such position.

I do not herein broadly claim a rotatable hanger bracket or swivel block provided with a carrier arm or bar adapted to be longitudinally shifted through it which hanger or bracket is provided with rolls adapted to make contact with a plurality of sides of said carrier bar, as such subject-matter is set forth in claims of another application, Serial No. 10,332, filed by me contemporaneously with this, to which application reference is to be made for full information as to its claiming clauses.

Having thus. described my invention, I claim 1. A riveting apparatus including, in combination, a movable supporting device, a riveting machine carried by said device, and a power operated expansion device structurally independent of the machine and the expansion of which against an adjacent surface or support operates to press the machine against a rivet, substantially as set forth.

2. A riveting apparatus including, in combination, a riveting machine, a carrier to which said machine is secured by a universal joint, and a power operated expansion strut consisting of a piston cylinder, head, and rod, the expansive movement of which occasions carrying the forcing of the machine to its work, substantially as set forth.

' 3. Ariveting apparatus, including, in combination, a riveting machine, a swinging or tilting supporting device on which it is mounted, and a power operated expansion device operative to tilt said supporting device to force the machine toward its work, substantially as set forth.

4. A riveting apparatus, including, in combination, a carrier bar, a riveting machine connected to one end of said bar by a flexible or universal joint, a power operated expansion strut secured to the other end of said bar, the expansion of which against a fixed support forces the machine against a rivet, and a movable support for said bar on which said bar has swinging or tilting movement, substantially as set forth.

5. In a riveting apparatus, in combination, a riveting machine, a carrier bar, means for supporting said bar f-ree'for movement, means for securing a riveting machine to said bar, an expansion strut, and means for securing said strut at different adjustments toward and away from said bar, substantially as set forth.

o. In a riveting apparatus, in combination, a'riveting machine, a carrier bar, means for securing a riveting machine thereto, a strut carrying slide mounted on said bar, and an expansion strut secured to said slide, substantially as set forth.

7. In a riveting apparatus, in combination, a riveting machine, a carrier bar, means for securing a riveting machine thereto, a strut carrying frame capable of adjustment toward and from the bar, and an expansion strut mounted on said frame, substantially as set forth.

8. In a riveting apparatus, in combination, a riveting machine, a carrier bar, means for securing a riveting machine thereto, a strut carrying slide mounted on said bar, a strut frame adjustably secured to said slide, and an expansion strut mounted on said frame, substantially as set forth.

9. In a riveting apparatus, in combination,

a riveting machine, a carrier bar, means for securing a riveting machine thereto, the strut carrying slide, the strut carrying frame having legs engaged in grooves in said slide,means for locking said legs at different positions in said grooves, and an expansion strut carried by said frame, substantially as set forth.

10. In a -rivetin g apparatus,in combination, a carrier bar, an opening formed in said bar, a yoke mounted in said opening, means for retaining said yoke free for movement in said opening, a spherical recess formed in said yoke, and a riveting machine extending through said yoke and having a spherical enlargement fitted to said spherical recess, substantially as set forth.

11. Inarivetingapparatus,in.combination, a carrier bracket, devices for supporting said bracket, a carrier bar, means for securing a riveting machine thereto,groo ved rolls mou nted in said bracket adapted to engage and operate against the opposing faces of said bar,

' and a riveting machine con nected to said bar,

substantially as set forth.

12. In a riveting apparatus,in combination, a carrier bracket, a support for said bracket adapted to be detachably connected to the structure upon which the riveting machine is at work with respect to which support said bracket is adapted to have rotative movement in the plane of a carrier bar passage ex- Tending through it, a carrier bar mounted in said passage and free for longitudinal movement with respect thereto, and means for securing said bracket in different positions of rotative adjustment, substantially as set forth.

13. In a riveting apparatus,in combination, a carrier bar, means for securing a riveting machine thereto, a carrier bracket on which said bar is mounted, a support on which said bracket is mounted free for rotative movement, and means, controllable from a point in the vicinity of the end of the bar, for occasioning the rotative movement of the bracket and bar with respect to the support, substantially as set forth.

14. In a rivetingapparatus,in combination, a supporting stud, a carrier bar adapted for movement of rotation upon said stud as an axis, a riveting machine mounted on said bar, and means for locking said bar in various positions of rotative adjustment, substantially as set forth.

15. In arivetiugapparatus,incombination, a stud, a carrier bar free for rotative movement with respect thereto, a rack mounted on said stud, a shaft, carried by said carrier bar, and provided with a worm engaged with said rack, and an operating wheel or device connected to the end of said shaft, substantially as set forth.

16. In a riveting apparatus,in combination, a stud, a carrier bar mounted for rotative movement on said stud, a rack mounted on said stud, a shaft supported on the carrier bar, a Worm sleeve keyed to said shaft and engaged with said rack, and means for preventing the longitudinal movement of said sleeve with the shaft on which it is mounted, substantially as set forth.

1?. Inarivetingapparatus,incombination,

a stud, a carrier bar, a carrier bracket, a rack mounted on said stud, a shaft supported on the carrier bar, a worm sleeve keyed to said shaft and engaged with said rack, means for preventing the longitudinal movement of said sleeve with the shaft on which it is mounted, a riveting machine connected to the bar bya universal joint, and a hand Wheel mounted on the shaft in the vicinity of said riveting machine, substantially as set forth.

18. In a riveting apparatusjn combination, a stud, a carrier bracket mounted on said stud and free for rotative movement with respect thereto, a carrier bar mounted on and free for longitudinal movement through said bracket, a traveler upon which said stud, bracket and bar are mounted, a rail or mast on which said traveler is mounted, free for rotative and longitudinal movement, and means for detachably mounting said rail or mast upon the structure upon which the riveting machine is at work, substantially as set forth.

19. In a riveting apparatus,in combination, a rail or mast, a traveler mounted on and adapted for longitudinal movement with respect to said rail or mast, a carrier bar connected to said traveler by a swivel or kindred joint, and means for securing said bar in various positions of rotation on said swivel joint, substantially as set forth.

20. In a riveting apparatus,in combination, a support adapted to be detachably secured to the structure upon the rivets in which the supported riveting machine is to operate, a bracket or hanger mounted on and adapted to have swiveled or rotative movement with respect to said support in the plane of a carrier bar mounted on or in said bracket or hanger, a carrier bar mounted on or in said bracket or hanger and free, for longitudinal movement with respect thereto, means for securing said bracket or hanger in different positions of rotative adjustment, and a riveting machine secured bya flexible or universal joint to said carrier bar, substantially as set forth.

In testimony that I claim the foregoing as myinvention I have hereunto signed my name this 21st day of March, A. D. 1900.

JAMES HENRY MULL.

In presence of F. NORMAN DIXON, Tnos. K. LANCASTER. 

